I returned from a 16-day stay on Maui and got an Advantage car for the first week. Two things: You go to the middle median at stop number 2, I think, to wait for the Advantage van. Second, the van takes you to Maui Mall and their new, smallish office.
The car was fine, some kind of Nissan that drove well and wasn't too thirsty ($4.699/gal!), thank goodness. I wandered a little when I returned the car, but found them okay. Although their per day rate was the same as some others, the week was $30 less because, I assume, they were off-airport.
Instead of taking their van back to the airport, I walked to the Queen Ka'ahumanu Center and took the
Maui Bus back to West Maui. First I boarded the Lahaina Islander #20 bus to the Wharf Cinema Center. There the Ka'anapali Islander #25 arrived shortly (I had time to use the restroom) and took me to Whalers Village. There I immediately boarded the Napili Islander #30 to my destination. Travel time from the Queen Center Mall was about 2 hours. The fare is $1 per boarding, i.e. $3, but a Day Pass is $2, a no-brainer! I used that Day Pass again to go to Safeway.
I used the buses a few more times and would have used them to get to the airport stop #3 by connecting to the Haiku Islander #35 or Upcountry Islander #40, but a friend drove me.
BTW in case you didn't know, Enterprise bought Alamo. They have at least 3 brands now.